I really doubt I will be here to see Christ's second coming. But as to someone telling me that this event occurred should I be here I won't have to depend on word of mouth; or have you forgotten about television?
There are a long list of events that will precede the second advent of Christ. One that many Christians are unaware of since it is not mentioned very often is found in Daniel.
Dan 12:4
4 "But as for you, Daniel, conceal these words and seal up the book until the end of time; many will go back and forth, and knowledge will increase." NAS
And then there is the prophecy that puts the lie to the OSAS doctrine.
2 Thessalonians 2:3-4
3 Let no one in any way deceive you, for it will not come unless the apostasy comes first, and the man of lawlessness is revealed, the son of destruction, 4 who opposes and exalts himself above every so-called god or object of worship, so that he takes his seat in the temple of God, displaying himself as being God. NAS
Christianity is moving toward full apostasy at a break neck pace.